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Northwest Africa 11570 | |||||||||||||||||||||||||||||||
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Basic information | Name: Northwest Africa 11570 This is an OFFICIAL meteorite name. Abbreviation: NWA 11570 Observed fall: No Year found: 2017 Country: (Northwest Africa) Mass: 75 g | ||||||||||||||||||||||||||||||
Classification history: |
This is 1 of 17 approved meteorites classified as H/L4. [show all] Search for other: H chondrites, H chondrites (type 4-7), H/L chondrites, H/L chondrites (type 4-7), L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||||||||
Comments: | Approved 16 Jan 2018 | ||||||||||||||||||||||||||||||
Writeup |
Writeup from MB 107:
Northwest Africa 11570 (NWA 11570) (Northwest Africa) Purchased: March 2017 Classification: Ordinary chondrite (H/L4) History: Purchased by Sean Tutorow and Brahim Tahiri from several diferent meteorite hunters in Morocco. Petrography: The olivine in the rock is fairly homogeneous and is in between the Fa ranges for H (Fa17.3-20.2) and L (Fa23.0 - 25.8) chondrites, leading to a classification of H/L. Although the mean low-Ca pyroxene composition (Fs17.6) is within the range of H chondrites, it is heterogeneous and is thus not definitive. Also present is rare Ca-pyroxene: Fs8.7Wo21.0 (n=1). The rock has well-defined chondrules. A few low-Ca pyroxene grains exhibit polysynthetic twinning. Chondrules haev devitrified mesostases. There is minor recrystallization apparent in the rock; there is some integration of chondrules with the matrix. Some troilite grains are polycrystalline. | ||||||||||||||||||||||||||||||
Data from: MB107 Table 0 Line 0: |
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Institutions and collections |
UCLA: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, United States (institutional address; updated 17 Oct 2011) |
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Catalogs: |
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References: | Published in Meteoritical Bulletin, no. 107, MAPS 55, 460-462
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Geography: |
Statistics: This is 1 of 9710 approved meteorites from (Northwest Africa) (plus 1853 unapproved names) | ||||||||||||||||||||||||||||||
Also see: |
This lists the most popular meteorites among people who looked up this meteorite.
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Synonyms: |
Northwest Africa 12600 (NWA 12600 is the same meteorite as NWA 11570) NWA 12600 (NWA 12600 is the same meteorite as NWA 11570) | ||||||||||||||||||||||||||||||
Revision history: |
This lists important revisions made to data for this record.
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